drm/radeon: fix potential buffer overflow in nisetmcspecialregisters()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.256 by commit 1f341053852be76f82610ce47a505d930512f05c, it was introduced in version v3.11 by commit 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043. For more details please see the references link.